In radio, a guard band is a narrow, intentionally unused frequency range of the radio spectrum between two wider radio bands, for the purpose of preventing interference between them.[1] It is used in frequency-division multiplexing. Guard bands exist in both wired and wireless communications.
A guard band can also be licensed for use by low-powered devices such as a private mobile phone network.[2]
References
Look up guard band in Wiktionary, the free dictionary.
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